Click on the third or sixth rank to set the en passant target square.

EGTB: win in 2 half-moves

# move score
1 Rb8 win in 1 half-moves
2 Kb5 loss in 9 half-moves
3 Kb4 loss in 7 half-moves
4 Ra1 loss in 7 half-moves
5 Kb3 loss in 5 half-moves
6 Ka3 loss in 2 half-moves
7 Ka5 loss in 2 half-moves
8 Kb2 loss in 2 half-moves
9 Kc2 loss in 2 half-moves
10 Kd1 loss in 2 half-moves
11 Kd2 loss in 2 half-moves
12 Rb2 loss in 2 half-moves
13 Rb3 loss in 2 half-moves
14 Rb4 loss in 2 half-moves
15 Rb5 loss in 2 half-moves
16 Rb6 loss in 2 half-moves
17 Rb7 loss in 2 half-moves